158 OSTEOLOGY OF ANGUILLID^ — GILL. 



^ AnguillidfB, Eaup, Arcbiv f. Naturgesch., 22. Jg., B. l,p. 54, 1856. 



= Anguillida?, Kaiq^, Cat. Apod. Fish B. M., p. 32, 1856. 



= Aiiguillidaj, Richardson, Enc. Brit. 8th ed., v. 12, p. 232, 1856. 



^Auguilloidei, BleeJcer, Enum. Sp. Piscium Archipel. Indico, p. xxxiii, 1859. 



< Angnilloidei, Kncr, Sitzungsb. k. Akad. Wissensch. (Wien), v. 42, p. 1, 1860. 



< Murauidte, Giinther, Cat. Fishes Brit. Mus., v. 8, p. 19, 1870. 



= Augnillida3, Cope, Proc. Am. Assoc. Adv. Sci., v. 20, p. 334, 1872. 

 = Anguillidse, Gill, Arrangement Fam. Fishes, p. 20, 1872. 



< Anguillje, Fitzinger, Sitzgungsber. k. Akad. der Wissensch. (Wien), B. 67, 1. Abth., 



p. 45, 1873. 

 = Mursenidi, Poey, Anal. Soc. Esp. Hist. Nat., v. 4, p. 10,1875. 

 <C Anguillidse, Morean , Hist. Nat. Poiss. France, v. 3, p. 560, 1881. 



< Anguillidfp, Jordan 4- Gilbert, Syn. Fishes N. Am., p. 357, 1882. 

 = Anguillida?, Gill, Standard Nat. Hist., v. 3, p. 101, 1885. 



= Anguillidffi, Jordan, An. Rep. Com. Fish, for 1885, p. 843, 1887 (Sep., p. 55, 1885). 

 = Anguillidae, Jordan, Man. Vertebrates North. U. S., 5th ed., p. 89, 1888. 



Synonyms as subfamily names. 



<^ Anguillinia, Eafineique, Analyse de la Nature, p. — , 1815. 



< Mursenini, Bonaparte. Nuovi Auuali d. Sci. Nat., t. 2, p. 133, 1838 ; t. 4, p. 276, 1840. 



< Anguillinae, iS'«)atwsoH,Nat. Hist, and Class. Fishes, etc!, v. 1, p. 220. 1838. 



< Angnillini, Bonaparte, Cat. Metod. Pesci Europei, p. 6*, 38*, 1846. 

 = Anguillinje, Kaup, Arcbiv f. Naturgesch., 22. Jg., B. 1, p. 54, 1856. 



< Anguillina, Giinther, Cat. Fishes B. M., v. 8, pp. 20,23, 1870. 

 = Anguillina}, Jordan 4' Gilbert, Syn. Fishes N. A., p. 357, 1882. 



DIAGNOSIS. 



Enchelycephalons Apodals with conic head, well developed opercular 

 apparatus, lateral maxilliues, cardiform teeth, distinct tongue, vertical 

 lateral branchial apertures, continuous vertical fins with the dorsal far 

 from the head, pectorals well developed, scaly skin, and nearly perfect 

 branchial skeleton. 



Description. 



Body typically anguilliform, anteriorly subcylindrical, compressed 

 behind, robust and with the caudal portion gradually attenuated back- 

 wards, and with the anus in the anterior half of the length. 



Scales small, linear or elongated elliptical, distant, arranged in small 

 groups obliquely at right angles to those of the neighboring groups. 



Lateral line distinct. 



Head moderate, oblong conic, with all the bones invested in the mus- 

 cles or skins. 



Eyes within the anterior half of the head, directed sideways, of mod- 

 erate size ; not covered by the skin. 



Nostrils mostly lateral ; the posterior directly in front of the eyes, the 

 anterior near the margin of the snout and tubular. 



Mouth with the cleft slightly oblique, extending below or little behind 

 the eves. 



Ja>ys well developed j maxilliues approximated to the front of the 



